Fencing competition can be studied at two time levels relative to metabolic processes to generate ATP which express particularly muscular power and muscular endurance capacity. Whereas the aerobic process allows to compete all along competition, the phosphocreatine process allows to meet the immediate demands imposed by high - intensity skills. The aim of this study is to compare the relationship between both muscular power and muscular endurance capacity in young fencers involved or not in competition. Using field tests, muscular power and muscular endurance capacity were studied in two groups of sixteen young fencers respectively involved or not in competition. Blood lactate and heart rates were measured. Because of the duration and organization of fencing competitions, fencers need both muscular power and muscular endurance capacity to face respectively high - intensity and long - term energy. However, out of a competitive context, the relationship between both muscular power and muscular endurance capacity is not crucial.